Ashes from fast pyrolysis bio-oil production of difgerent waste - PowerPoint PPT Presentation

Ashes from fast pyrolysis bio-oil production of difgerent waste streams may be suited as soil amendment HERAKLION 7 th International Conference on Sustainable Solid Waste M. Probst , M. Fernández-Delgado Juárez, M. Gómez-Brandón, V. Management, 28.06.2019 Turan, H. Insam

The project Replace fossil fuels by renewable, sustainable resources  Biomass FPBO FPBO Biomas Fast Gas s pyrolysis Char 2

The project Utilisation of difgerent biomass types for residential heating Energy for Combustio FPBO residential n heating Biomas Fast Gas Gas s pyrolysis Char Char 3

The project What to do with the ash?  Landfjlling  Cement industry Energy for Combustio FPBO residential n heating Biomas Fast Gas Ash Ash s pyrolysis Combustio n Energ Char y 4

The project Advantages: Disadvantages:  Bufgering of soil pH  (Heavy) Metals  Nutrients: Carbon,  Polycyclic minerals, salts,… hydrocarbons Energy for Combustio FPBO residential  … n heating Biomas Soil Fast Gas Recycling Ash amendme s pyrolysis Combustio nt n Energ Char y 5

The project Tasks  Characterise the ashes from difgerent biomass types  Apply ashes to grassland soil  Monitor soil properties and plant biomass 6

Ash properties Characterisation  pH  (Heavy) Metal content  Electrical conductivity  Carbon content Wheat Miscanthus Forest Bar straw sp. residues k  Phytotoxicity  … 7 sh leachate, Picture: Marina Fernández-Delgado Juárez.

Hackschnitzel Ash properties  pH > 12  Carbon content up to 18% dry mass  Phosphor content up to over 340 mg kg -1 8

Hackschnitzel Ash properties (Heavy) Metal contents Phytotoxicity 9

Hackschnitzel Field trial 10 ield experiment in Imst, T yrol. Picture: Marina Fernández-Delgado Juárez.

Field trial Ash addition:  500 kg ha -1 a -1 (BMLFU guidelines) in autumn Fertilization  Cattle manure in spring (180 kg N ha -1 a -1 ) 1.Control Sampling 2.Bark -FPBO-Ash Soil: • Beginning and end of 3.Miscanthus -FPBO- the growth period Ash Plant biomass: 4.Forest residues • 3 cuttings during the growth period -FPBO-Ash !!Ash from wheat straw contained too high amounts of 11 mobilisable Cr and Ni. It was not

Field trial Analyses Physicochemi Microbiolog stry Plant biomass y • pH • Soil respiration • Plant biomass • Microbial • Electrical  3 Cuttings biomass conductivity • Abundance of • Nitrogen genes involved in • Carbon N-cycle (Amo-A, Amo-B) • Phosphorous 12

Results  Only seasonal changes  Ash amendment does not afgect physico-chemical soil properties 13

Results  Bark & Forest residues ash increase nutrient contents in the soil  Efgect is more prominent during spring… 14

Results  Very dry year 2018  Ash amendment does not afgect plant growth  Ash amendment does not afgect plant composition 15

Conclusion Ash amendment  has no huge efgect on soil properties  increases the soil pH  increases soil nutrient contents  does not afgect plant growth and composition  seems to be applicable as soil amendment. 16

Future work  Ongoing fjeld trial for possible long-term efgects  Analysis of (heavy) metal contents in soil and hay after a longer application period  Nutrient analysis of plant biomass  Soil microbiome analysis 17

Thank you The Residue2Heat project has received funding from the All collaborators European Union’s Horizon 2020 Research and Innovation All funders programme under Grant Agreement No. 654650 All of your attention! 18